Richey
scarifying tooth attachment
sn



T X (0 0, 02a DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICEPublished at the request of the applicant or owner in accordance withthe Notice of Apr. 11, 1968, 849 O.G. 1221. Identification is by serialnumber of the application and the heading indicates the number of pagesof specification, including claims, and of sheets of drawing containedin the application as originally filed. The file of this application isavailable to the public for inspection; reproduction may be purchasedfor .30 cents per sheet.

Applications published under the Defensive Publication Program have notbeen examined as to the merits of alleged invention. The Patent Ofiicemakes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED MARCH 25, 1969 702,899 SCARIFYIN G TOOTH ATTACHMENT ClarenceB. Richey, Fresno, 'Calif., assignor to Massey- Fergnson Inc., DesMoines, Iowa, a corporation of Maryland Filed Feb. 5, 1968. PublishedMar. 25, 1969 Class 172-197 2 Sheets Drawing. 6 Pages Specification Ascarifier-scraper implement is mounted on a conventional tractorthree-point hitch. The implement includes a rectangular hollowtransverse beam pivoted to the hitch lower links and pivoted to thehitch upper link by a frame member. Plates on the ends of the beam arepivoted to the sides of a box scraper. The beam includes laterallyspaced pairs of vertically aligned slots in its upper and lower walls. Ascarifier assembly includes a pair of fiat vertically spaced plates thatare interconnected by vertical wall members welded to the plates.Laterally spaced vertical legs interconnect the plates and extendupwardly for insertion through the bar slots and tongue-and-grooveretention. Laterally spaced pairs of vertically aligned slots areprovided in front and rear staggered rows in the plates. Scarifier teethhave shanks insertable into the plate slots for retention by cotter pinsinserted into upper holes in the shanks. Lateral reinforcement bars onthe upper plate and the vertical wall members abut the shanks toreinforce the teeth. The shank rear edges abut the vertical walls andare notched at their upper ends to engage the upper plate bottom. Thetwo spaced and staggered rows of teeth permit fine scarifying.

DEF. PUB.

Marcia 25, 19% c. a. RKZHEY SCARIFYING TooTH ATTACHMENT Sheet 1 of 2Filed Feb. 5, 1968 INVENTOR.

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DEF. PUB.

Mack 25, 1969 c. B. RICHEY SCARIFYING TOOTH ATTACHMENT Sheet 3L of 2Filed Feb. 5, 1968 INVENTOR. CMAZ'A/Cf b. A /CI /H BY e- 8:

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